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Java > Open Source Codes > org > continuent > sequoia > common > jmx > monitoring > backend > ReadRequestsCollector


1 /**
2  * Sequoia: Database clustering technology.
3  * Copyright (C) 2002-2004 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Copyright (C) 2005 AmicoSoft, Inc. dba Emic Networks
6  * Contact: sequoia@continuent.org
7  *
8  * Licensed under the Apache License, Version 2.0 (the "License");
9  * you may not use this file except in compliance with the License.
10  * You may obtain a copy of the License at
11  *
12  * http://www.apache.org/licenses/LICENSE-2.0
13  *
14  * Unless required by applicable law or agreed to in writing, software
15  * distributed under the License is distributed on an "AS IS" BASIS,
16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17  * See the License for the specific language governing permissions and
18  * limitations under the License.
19  *
20  * Initial developer(s): Nicolas Modrzyk.
21  * Contributor(s):
22  */
23 package org.continuent.sequoia.common.jmx.monitoring.backend;
24
25 import org.continuent.sequoia.common.i18n.Translate;
26 import org.continuent.sequoia.controller.backend.DatabaseBackend;
27
28 /**
29  * Return total of currently read requests made on this backend
30  *
31  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a>
32  */
33 public class ReadRequestsCollector extends AbstractBackendDataCollector
34 {
35   private static final long serialVersionUID = 4891222146267148055L;
36
37   /**
38    * create new collector
39    *
40    * @param backendName to collect data from
41    * @param virtualDatabaseName that contains this backend
42    */
43   public ReadRequestsCollector(String JavaDoc backendName, String JavaDoc virtualDatabaseName)
44   {
45     super(backendName, virtualDatabaseName);
46   }
47
48   /**
49    * @see org.continuent.sequoia.common.jmx.monitoring.AbstractDataCollector#collectValue()
50    */
51   public long getValue(Object JavaDoc backend)
52   {
53     return ((DatabaseBackend) backend).getTotalReadRequest();
54   }
55
56   /**
57    * @see org.continuent.sequoia.common.jmx.monitoring.AbstractDataCollector#getDescription()
58    */
59   public String JavaDoc getDescription()
60   {
61     return Translate.get("monitoring.backend.total.read.requests"); //$NON-NLS-1$
62 }
63 }
64
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